ZIP_SET_FILE_COMPRESSION

Section: Library Functions Manual (3)
Updated: May 1, 2012
Index Return to Main Contents
 

NAME

zip_set_file_compression - set compression method for file in zip  

LIBRARY

libzip (-lzip)  

SYNOPSIS

#include <zip.h>

int
zip_set_file_compression(struct zip *archivezip_uint64_t indexzip_int32_t compzip_uint32_t comp_flags);  

DESCRIPTION

The zip_set_file_compression() function sets the compression method for the file at position index in the zip archive to comp with the compression method specific comp_flags. The comp is the same as returned by zip_stat(3). For the comp argument, currently only the following values are supported:
ZIP_CM_DEFAULT
default compression; currently the same as ZIP_CM_DEFLATE.
ZIP_CM_STORE
Store the file uncompressed.
ZIP_CM_DEFLATE
Deflate the file with the zlib(3) algorithm and default options

The comp_flags argument is currently ignored.

The current compression method for a file in a zip archive can be determined using zip_stat(3).  

RETURN VALUES

Upon successful completion 0 is returned. Otherwise, -1 is returned and the error information in archive is set to indicate the error.  

ERRORS

zip_set_file_compression() fails if:
[ZIP_ER_INVAL]
index is not a valid file index in archive, or the argument combination is invalid.
[ZIP_ER_COMPNOTSUPP]
Unsupported compression method requested.
[ZIP_ER_RDONLY]
Read-only zip file, no changes allowed.
 

SEE ALSO

libzip(3), zip_stat(3)  

AUTHORS

Dieter Baron <dillo@nih.at> and Thomas Klausner <tk@giga.or.at>


 

Index

NAME
LIBRARY
SYNOPSIS
DESCRIPTION
RETURN VALUES
ERRORS
SEE ALSO
AUTHORS